12577856 has 28 divisors (see below), whose sum is σ = 25389840. Its totient is φ = 6180480.

The previous prime is 12577819. The next prime is 12577879. The reversal of 12577856 is 65877521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111 + ... + 5441.

It is an arithmetic number, because the mean of its divisors is an integer number (906780).

Almost surely, 2^12577856 is an apocalyptic number.

12577856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12577856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12694920).

12577856 is an abundant number, since it is smaller than the sum of its proper divisors (12811984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12577856 is an equidigital number, since it uses as much as digits as its factorization.

12577856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402 (or 3392 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 12577856 is about 3546.5273155581. The cubic root of 12577856 is about 232.5602788169.

The spelling of 12577856 in words is "twelve million, five hundred seventy-seven thousand, eight hundred fifty-six".